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Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 5556434838

Certificate GIA 5556434838

Diamond specifications and retailer prices

From £1,137 GBP
HK$11,900 HKD
As of November 1, 2026
Save £1,422 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,559 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5556434838. Listed at 18 retailers as of November 1, 2026, with prices from £1,137 to £2,559, a £1,422 spread on the same certified stone. MOH London lists it at £2,559. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556434838
Dimensions7.06 × 5.65 × 3.89 mm
L/W Ratio1.25
Girdle conditionFaceted
Top View
7.06 mm5.65 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556434838
Side View
Table 68.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,559 GBP|Low: £1,137 GBP|High: £2,732 GBP|Avg: £1,622 GBP|-6.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 16£1,137 GBP
Retailer 15£1,155 GBP
Retailer 10£1,237 GBP
Retailer 12£1,263 GBP
Retailer 6£1,350 GBP
Retailer 14£1,368 GBP
Retailer 5£1,384 GBP
Retailer 8£1,385 GBP
Retailer 13£1,388 GBP
Retailer 2£1,476 GBP
Retailer 4£1,623 GBP
Retailer 11£1,624 GBP
Retailer 3£1,820 GBP
Retailer 9£1,900 GBP
Retailer 17£2,023 GBP
Retailer 7£2,333 GBP
MOH London£2,559 GBP

27 data points across 17 retailers

18 retailers£1,137 GBP to £2,559 GBP

A
Cheapest Retailer
-
£1,137 GBP
HK$11,900 HKD
A
Retailer 2
-
£1,155 GBP
$1,548 USD
View
B+
Retailer 3
-
£1,237 GBP
$1,658 USD
View
Final sale: no returns
A
Retailer 4
-
£1,263 GBP
$1,692 USD
View
B+
Retailer 5
-
£1,350 GBP
$1,809 USD
View
B+
Retailer 6
-
£1,368 GBP
A$2,821 AUD
View
B+
Retailer 7
-
£1,384 GBP
$1,855 USD
View
B+
Retailer 8
-
£1,385 GBP
$1,856 USD
View
B+
Retailer 9
-
£1,388 GBP
$1,860 USD
View
B+
Retailer 10
-
£1,476 GBP
$1,978 USD
View
B+
Retailer 11
-
£1,623 GBP
$2,174 USD
View
B
Retailer 12
-
£1,624 GBP
View
B
Retailer 13
-
£1,634 GBP
A$3,368 AUD
View
B+
Retailer 14
-
£1,820 GBP
ZAR 39,402 ZAR
View
Retailer 15
-
£1,900 GBP
A$3,916 AUD
View
Price last confirmed 27 days ago
B
Retailer 16
-
£2,023 GBP
€2,581 EUR
View
Retailer 17
-
£2,333 GBP
$3,127 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
5D0516FB0 · Nov 1
£2,559 GBP
View
17 more retailers have this diamond
Prices start from £1,137 GBPSave up to £1,422 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.21ct Cushion
£1,137 GBP